le16_to_cpu(es->s_def_resgid) != EXT2_DEF_RESGID) {
seq_printf(seq, ",resgid=%u", sbi->s_resgid);
}
- if (test_opt(sb, ERRORS_CONT)) {
+ if (test_opt(sb, ERRORS_RO)) {
int def_errors = le16_to_cpu(es->s_errors);
if (def_errors == EXT2_ERRORS_PANIC ||
- def_errors == EXT2_ERRORS_RO) {
- seq_puts(seq, ",errors=continue");
+ def_errors == EXT2_ERRORS_CONTINUE) {
+ seq_puts(seq, ",errors=remount-ro");
}
}
- if (test_opt(sb, ERRORS_RO))
- seq_puts(seq, ",errors=remount-ro");
+ if (test_opt(sb, ERRORS_CONT))
+ seq_puts(seq, ",errors=continue");
if (test_opt(sb, ERRORS_PANIC))
seq_puts(seq, ",errors=panic");
if (test_opt(sb, NO_UID32))
seq_puts(seq, ",xip");
#endif
+ if (!test_opt(sb, RESERVATION))
+ seq_puts(seq, ",noreservation");
+
return 0;
}
static const struct super_operations ext2_sops = {
.alloc_inode = ext2_alloc_inode,
.destroy_inode = ext2_destroy_inode,
- .read_inode = ext2_read_inode,
.write_inode = ext2_write_inode,
.delete_inode = ext2_delete_inode,
.put_super = ext2_put_super,
* it might be "neater" to call ext2_get_inode first and check
* if the inode is valid.....
*/
- inode = iget(sb, ino);
- if (inode == NULL)
- return ERR_PTR(-ENOMEM);
- if (is_bad_inode(inode) ||
- (generation && inode->i_generation != generation)) {
+ inode = ext2_iget(sb, ino);
+ if (IS_ERR(inode))
+ return ERR_CAST(inode);
+ if (generation && inode->i_generation != generation) {
/* we didn't find the right inode.. */
iput(inode);
return ERR_PTR(-ESTALE);
return res;
}
-static int ext2_check_descriptors (struct super_block * sb)
+static int ext2_check_descriptors(struct super_block *sb)
{
int i;
- int desc_block = 0;
struct ext2_sb_info *sbi = EXT2_SB(sb);
unsigned long first_block = le32_to_cpu(sbi->s_es->s_first_data_block);
unsigned long last_block;
- struct ext2_group_desc * gdp = NULL;
ext2_debug ("Checking group descriptors");
- for (i = 0; i < sbi->s_groups_count; i++)
- {
+ for (i = 0; i < sbi->s_groups_count; i++) {
+ struct ext2_group_desc *gdp = ext2_get_group_desc(sb, i, NULL);
+
if (i == sbi->s_groups_count - 1)
last_block = le32_to_cpu(sbi->s_es->s_blocks_count) - 1;
else
last_block = first_block +
(EXT2_BLOCKS_PER_GROUP(sb) - 1);
- if ((i % EXT2_DESC_PER_BLOCK(sb)) == 0)
- gdp = (struct ext2_group_desc *) sbi->s_group_desc[desc_block++]->b_data;
if (le32_to_cpu(gdp->bg_block_bitmap) < first_block ||
le32_to_cpu(gdp->bg_block_bitmap) > last_block)
{
return 0;
}
first_block += EXT2_BLOCKS_PER_GROUP(sb);
- gdp++;
}
return 1;
}
static loff_t ext2_max_size(int bits)
{
loff_t res = EXT2_NDIR_BLOCKS;
- /* This constant is calculated to be the largest file size for a
- * dense, 4k-blocksize file such that the total number of
+ int meta_blocks;
+ loff_t upper_limit;
+
+ /* This is calculated to be the largest file size for a
+ * dense, file such that the total number of
* sectors in the file, including data and all indirect blocks,
- * does not exceed 2^32. */
- const loff_t upper_limit = 0x1ff7fffd000LL;
+ * does not exceed 2^32 -1
+ * __u32 i_blocks representing the total number of
+ * 512 bytes blocks of the file
+ */
+ upper_limit = (1LL << 32) - 1;
+
+ /* total blocks in file system block size */
+ upper_limit >>= (bits - 9);
+
+
+ /* indirect blocks */
+ meta_blocks = 1;
+ /* double indirect blocks */
+ meta_blocks += 1 + (1LL << (bits-2));
+ /* tripple indirect blocks */
+ meta_blocks += 1 + (1LL << (bits-2)) + (1LL << (2*(bits-2)));
+
+ upper_limit -= meta_blocks;
+ upper_limit <<= bits;
res += 1LL << (bits-2);
res += 1LL << (2*(bits-2));
res <<= bits;
if (res > upper_limit)
res = upper_limit;
+
+ if (res > MAX_LFS_FILESIZE)
+ res = MAX_LFS_FILESIZE;
+
return res;
}
unsigned long logic_sb_block;
unsigned long offset = 0;
unsigned long def_mount_opts;
+ long ret = -EINVAL;
int blocksize = BLOCK_SIZE;
int db_count;
int i, j;
if (le16_to_cpu(sbi->s_es->s_errors) == EXT2_ERRORS_PANIC)
set_opt(sbi->s_mount_opt, ERRORS_PANIC);
- else if (le16_to_cpu(sbi->s_es->s_errors) == EXT2_ERRORS_RO)
- set_opt(sbi->s_mount_opt, ERRORS_RO);
- else
+ else if (le16_to_cpu(sbi->s_es->s_errors) == EXT2_ERRORS_CONTINUE)
set_opt(sbi->s_mount_opt, ERRORS_CONT);
+ else
+ set_opt(sbi->s_mount_opt, ERRORS_RO);
sbi->s_resuid = le16_to_cpu(es->s_def_resuid);
sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
blocksize = BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
- if ((ext2_use_xip(sb)) && ((blocksize != PAGE_SIZE) ||
- (sb->s_blocksize != blocksize))) {
+ if (ext2_use_xip(sb) && blocksize != PAGE_SIZE) {
if (!silent)
printk("XIP: Unsupported blocksize\n");
goto failed_mount;
sb->s_op = &ext2_sops;
sb->s_export_op = &ext2_export_ops;
sb->s_xattr = ext2_xattr_handlers;
- root = iget(sb, EXT2_ROOT_INO);
- sb->s_root = d_alloc_root(root);
- if (!sb->s_root) {
- iput(root);
- printk(KERN_ERR "EXT2-fs: get root inode failed\n");
+ root = ext2_iget(sb, EXT2_ROOT_INO);
+ if (IS_ERR(root)) {
+ ret = PTR_ERR(root);
goto failed_mount3;
}
if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) {
- dput(sb->s_root);
- sb->s_root = NULL;
+ iput(root);
printk(KERN_ERR "EXT2-fs: corrupt root inode, run e2fsck\n");
goto failed_mount3;
}
+
+ sb->s_root = d_alloc_root(root);
+ if (!sb->s_root) {
+ iput(root);
+ printk(KERN_ERR "EXT2-fs: get root inode failed\n");
+ ret = -ENOMEM;
+ goto failed_mount3;
+ }
if (EXT2_HAS_COMPAT_FEATURE(sb, EXT3_FEATURE_COMPAT_HAS_JOURNAL))
ext2_warning(sb, __FUNCTION__,
"mounting ext3 filesystem as ext2");
failed_sbi:
sb->s_fs_info = NULL;
kfree(sbi);
- return -EINVAL;
+ return ret;
}
static void ext2_commit_super (struct super_block * sb,
projects / linux-2.6-omap-h63xx.git / blobdiff